I have written a code in the arduino platform which I want to upload to an atmega8 without the boot-loader...
- to save space..
- to skip the boot up time of the arduino bootloader..
If you want to save space, use an ISP (usbtiny, AVRISP mkII ...).
madworm:
If you want to save space, use an ISP (usbtiny, AVRISP mkII ...).
As I have written the code in the arduino platform, how will I use the arduino program to upload via usbtiny, AVRISP mkII ...???
Is it possible that I connect a STK500 programmer and upload it to the atmega8..??
If so that what will i have to select on the board option of the arduino progam, as the atmega8 will not have the arduino bootloader...??
"bootloader" is a kind of programmer. In "preferences.txt" it is set as the default:
upload.using=bootloader
I think you are supposed to create a "hardware/boards.txt" file that specifies a different programmer.
Programmers are listed in "programmers.txt":
######################################################
atmega8.name=Arduino NG or older w/ ATmega8
atmega8.upload.using=usbtinyisp
atmega8.upload.protocol=stk500
atmega8.upload.maximum_size=7168
atmega8.upload.speed=19200
atmega8.bootloader.low_fuses=0xdf
atmega8.bootloader.high_fuses=0xca
atmega8.bootloader.path=atmega8
atmega8.bootloader.file=ATmegaBOOT.hex
atmega8.bootloader.unlock_bits=0x3F
atmega8.bootloader.lock_bits=0x0F
atmega8.build.mcu=atmega8
atmega8.build.f_cpu=16000000L
atmega8.build.core=arduino
######################################################
can you be more clear of how to do it...??
These are my notes on how to upload to the Atmega328 using my UsbTinyISP gadget:
To upload using ICSP header
- Quit Arduino application.
- Edit /Users/yourname/Library/Arduino/preferences.txt
Change the line:
upload.using=bootloader
to:
upload.using=usbtinyisp
- Then start Arduino (you can select Uno board) and upload in the normal way.
To change back, set the upload.using back to “bootloader”. Then you will need to re-upload the bootloader onto the chip using the Arduino IDE.